Drier.



G. MERRIMAN.

DRIER.

APPLICATION FILED SEPT-23.1914.

Patented July 20, 1915.

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G. MERRIMAN.

DRIER.

APPUCATWNFILED SEPT- 23- 1914. 1,146,894.

Patented July 20, 1915.

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GEORGE MERRIMAN, OF TOLEDO, OHIO.

DRIER.

Specification of Letters Patent.

Patented July 20, 1915.

Application 'fi'ledseptember 23, 1914. Serial No. 863,137.

To all whom it may concern:

Be it known that I, GEORGE MERBIMAN, a citizen of the United States,residing at T0- ledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Driers, of which thefollowing is a specification. v,

The object of the invention is the provision of a drier of relativesmall dimensions, especially adapted for use on a one car asphalt plantfor drying sand, stone or gravel, whereby the space occupied will--notbe excessive, and which shall be so constructed and arranged that heatcan be applied to the exterior surface and also to the interior of thedrier through which the. sand is caused to pass.

The invention consists in certain novelties of construction andcombinations-of parts as herein set forth and claimed.

The accompanying drawings illustrate an example of the embodiment of theinvention constructed according to the best mode of procedure I have sofar devised for the purpose.

Figure 1 is a side viewshowing in elevation the rotatory drum and insection the fire box inclosing the drum. Fig. 2 is an enlarged sectionaland end view of the trunnion and drum, the section being taken on line22 of Fig. 1. Fig. 3 is an enlarged sectional view in elevation ofthedrum,trunnion, and gear wheel at the right in Fig. 1. Fig. 4 is anenlarged sectional View of the left hand end of the drum and trunnion.

The fire box A'coinprises a suitable base with a grate B, sides with aplurality of openings C therein, with doors, through which openings thefuel, such as wood, coal or coke, is applied to the grate, and ametallic top and ends to confine the heat in contact with the exteriorsurface of the drum.

The rotary drum is comprised of two cast spidersD and E with integralhollow trun nions or shafts. Each spider has a rim 1, spokes 2, slots 3at the ends of the spokes adjacent to the rim, and a sheet metalcylindrical covering F riveted to the rims of both spiders by rivets G,as shown. Four I beams H, or double channel beams, have their endslocated within the slots 3 so their flanges will bear against theinterior surface of the sheet metal cylinder F and support the same.Between the webs of the beams H are secured in any suitable way obliqueor sections of spirally bent plates J which constitute, when assembled,a complete sand, stone or. gravel advancing spiral from end to end ofthe drum broken only by the interposed I beams. The part of an I beambetween the adjacent ends of two plates J forms a spill plate K, thatis, the sand, stone or gravel is carried upwardly by the I beam web andflange and spilled over toward the center of the drum as the drumrotates.

The right hand spider Dchas a hollow trunnion L with a relatively largeopening M within which is loosely disposed an elbowshaped pipe N andwithin the same is a worm shaft 0 carrying a worm P, as shown. The wormshaft has an inner bearing Q in a spider carried by the drum, and anouter bearing at R. Outside of the pipe the shaft 1s provided with agear wheel or sprocket Wheel S which receives power from the engme onthe car. The open feed end T of the pipe receives the sand, stone orgravel to be dried and the worm delivers it to the interior of the drumbetween the spokes. :Ihe trunnion L is supported by and rotates masuitable boX U, the power being applied to the gear or sprocket wheel Vto rotate the entire drum. 7

The spider E has a hollow trunnion XV supported in aboX X outside theend of the fire box, as shown at the left in Fig. 1.

Within the hollow trunnion or shaft W is an oil injector burner 4 of anydesired species by which heat is applied to the sand on the interior ofthe drum. Below the trunnion W is a chute 5 through which the driedsand, stone or gravel is discharged from the interior of the drum.

At the right and surrounding the trunnion L is a smoke and gas breechingG and having an opening facing the open end of the drum, the smoke stack7 being a continu ation of the breeching.

The drier operates as follows: A fire is made in the fire box, the oilinjector actuated and the sprayed oil lighted, the drum and feed wormrotated, and sand, stone or gravel delivered to the feed pipe or chute.The sand, stone or gravel advanced by the worm is discharged into theinterior of the drum and turned over and over by the spill plates andadvanced by the spiral plates to the delivery chute. In passing throughthe drum the sand, stone or gravel is heated by coming in contact withthe exterior wall of, the drum heated from the outside, and by the oilfire within the interior. All moisture lit) is thus evaporated andpasses with the exterior and interior products of combustion out of thestack.

Obviously, I have provided a very simple and effective interiorly oiland exteriorly fire box heated drier which occupies but small space andis especially adapted for use as a part of a car asphalt plant.

What I claim is:

1. The combination of a fire box substantially closed, a drier drumlocated and adapted to be rotated within the fire box, said fire boxbeing adapted for use in applying heat to the exterior surface of thedrum, and means for injecting and burning liquid fuel within theinterior of the drum while being rotated.

2. The combination of a fire box substantially closed, a drier drumlocated and adapted to be rotated within the fire box, said fire boxbeing adapted for use in applying heat to the exterior surface of thedrum, and means for introducing liquid fuel and burning the same withinthe interior of the drum com prising a hollow trunnion and an injectorextending into said hollow trunnion and in communication with theinterior of the drum.

3. A-drier drum comprisig two spiders with hollow trunnions, flangedbeams uniting the spiders, a metallic covering outside the flanged beamsand spiders, deflecting plates between the beams, and a spiral conveyerlocated within one of the trunnions; the conveyer and one of thetrunnions each having a gear wheel.

4. A drier drum comprising two spiders each having a rim and a trunnionand one of said trunnions being hollow, flanged beams uniting thespiders, a covering exterior to the flanged beams and secured to therims of the spiders, and deflecting plates between the beams forming aspiral from end to end of the drum, the said hollow trunnion having aspiral conveyer located within the same.

5. A drier drum comprising two spider's each having a rim and a trunnionand one of i said trunnions being hollow, flanged beams the trunnion anda spiral, conveyer within the pipe.

6. A drum comprising two spiders each having a hollow trunnion andspokes and slotted rims, flanged beams within the slots in the spiders,a covering secured to the rims exterior to the beams, and deflectingplates betweenthe beams; the trunnions having bearings engaging boxes,and one of said trunnions provided with a gear wheel.

7. A, drum comprising two spiders each with a slotted rim," spokes andatrunnion, flanged beams within the slots in the rims, a metalliccovering outside the flanged beams and secured to the rims of thespiders, and deflecting plates between the beams arranged to form aspiral from end to end of the drum; the flanged beams when the drum isrotated serving as spill plates.

8. The combination of a substantially closed fire box, a drum locatedwithin the fire box and having trunnions projecting outside the firebox, both of said trunnions being hollow, boxes for the trunnionsoutside the fire box, a gear wheel on one of the trunnions to rotate thedrum, a spiral conveyor located within one of the said hollow trunnionsfor delivering material .to the interior of the drum, and an oilinjector located in the other hollow trunnion.

In testimony whereof I aflix my signature in presence of two witnesses.

- GEORGE MERRIMAN. Witnesses SOL. D. TUCKER,

Gus MUNZESI-IEIMER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

